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Support SHA-512 hashes

Browse source 
Fixes #679.

Note: on x86_64, SHA-512 is considerably faster than SHA-256 (198 MB/s
versus 131 MB/s).
This commit is contained in:
Eelco Dolstra 2015-11-04 16:31:06 +01:00
parent a6ca68a70c
commit 6f1743b1a5
6 changed files with 30 additions and 17 deletions
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7
src/libutil/hash.cc
View file

@ -32,6 +32,7 @@ Hash::Hash(HashType type)
if (type == htMD5) hashSize = md5HashSize;
else if (type == htSHA1) hashSize = sha1HashSize;
else if (type == htSHA256) hashSize = sha256HashSize;
else if (type == htSHA512) hashSize = sha512HashSize;
else throw Error("unknown hash type");
assert(hashSize <= maxHashSize);
memset(hash, 0, maxHashSize);
@ -190,6 +191,7 @@ union Ctx
MD5_CTX md5;
SHA_CTX sha1;
SHA256_CTX sha256;
SHA512_CTX sha512;
};
@ -198,6 +200,7 @@ static void start(HashType ht, Ctx & ctx)
if (ht == htMD5) MD5_Init(&ctx.md5);
else if (ht == htSHA1) SHA1_Init(&ctx.sha1);
else if (ht == htSHA256) SHA256_Init(&ctx.sha256);
else if (ht == htSHA512) SHA512_Init(&ctx.sha512);
}
@ -207,6 +210,7 @@ static void update(HashType ht, Ctx & ctx,
if (ht == htMD5) MD5_Update(&ctx.md5, bytes, len);
else if (ht == htSHA1) SHA1_Update(&ctx.sha1, bytes, len);
else if (ht == htSHA256) SHA256_Update(&ctx.sha256, bytes, len);
else if (ht == htSHA512) SHA512_Update(&ctx.sha512, bytes, len);
}
@ -215,6 +219,7 @@ static void finish(HashType ht, Ctx & ctx, unsigned char * hash)
if (ht == htMD5) MD5_Final(hash, &ctx.md5);
else if (ht == htSHA1) SHA1_Final(hash, &ctx.sha1);
else if (ht == htSHA256) SHA256_Final(hash, &ctx.sha256);
else if (ht == htSHA512) SHA512_Final(hash, &ctx.sha512);
}
@ -312,6 +317,7 @@ HashType parseHashType(const string & s)
if (s == "md5") return htMD5;
else if (s == "sha1") return htSHA1;
else if (s == "sha256") return htSHA256;
else if (s == "sha512") return htSHA512;
else return htUnknown;
}
@ -321,6 +327,7 @@ string printHashType(HashType ht)
if (ht == htMD5) return "md5";
else if (ht == htSHA1) return "sha1";
else if (ht == htSHA256) return "sha256";
else if (ht == htSHA512) return "sha512";
else throw Error("cannot print unknown hash type");
}